CVE-2018-20406

Updated: 2025-08-20 00:41:16.644275

Description:

Modules/_pickle.c in Python before 3.7.1 has an integer overflow via a large LONG_BINPUT value that is mishandled during a "resize to twice the size" attempt. This issue might cause memory exhaustion, but is only relevant if the pickle format is used for serializing tens or hundreds of gigabytes of data. This issue is fixed in: v3.4.10, v3.4.10rc1; v3.5.10, v3.5.10rc1, v3.5.7, v3.5.7rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.7, v3.6.7rc1, v3.6.7rc2, v3.6.8, v3.6.8rc1, v3.6.9, v3.6.9rc1; v3.7.1, v3.7.1rc1, v3.7.1rc2, v3.7.2, v3.7.2rc1, v3.7.3, v3.7.3rc1, v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x MEDIUM 5.0
CVSS Version 3.x HIGH 7.5

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

EL 9 python 3.6 7.5 HIGH Already Fixed 2025-07-16 01:30:35
Ubuntu 16.04 python 3.6 7.5 HIGH Already Fixed 2025-07-25 02:04:22
Ubuntu 18.04 python 3.6 7.5 HIGH Already Fixed 2025-07-25 02:04:22
Ubuntu 20.04 python 3.6 7.5 HIGH Already Fixed 2025-07-25 02:04:21
Ubuntu 22.04 python 3.6 7.5 HIGH Already Fixed 2025-07-25 02:04:22
Ubuntu 24.04 python 3.6 7.5 HIGH Already Fixed 2025-07-25 02:04:22
Total: 16